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Frequency value F1~frequency
value F3
25.00
F5.04
V/F voltage value V2
Voltage value V1~voltage value
V3
50.0%
F5.05
V/F frequency value F3
Frequency value F2~motor rated
frequency
37.50
F5.06
V/F voltage value V3
Voltage value V2~100.0%*motor
rated voltage
75.0%
Voltage and frequency is as showed in Fig. F5-2.
Fig. F5-2 User Setting V/F Curve
F5.07
torque compensation set
0.0~30.0%motor
rated
voltage
Type
setting
F5.08
torque compensation cut-off frequency
0.0~motor rated frequency
15.00
To compensate for low frequency torque
characteristics, it is feasible to boost output voltage.
This function code indicates automatically torque
compensation with set value of 0.0% and manual
torque compensation with any set value other than
0.0%. F5.08 defines cut-off frequency fz of manual
torque compensation, as showed in Fig. F5-3 (Vb is
manual boost voltage).
Fig. F5-3 Torque Boost
Notice:
1:
in common V/F mode, auto torque boost mode
is invalid.
2:
auto torque boost mode is only valid in
advanced V/F mode.
F5.09
V/F control slip frequency compensation
0.0~200.0%*rated slip
0.0%
The speed of asynchronous motor will decrease after
loading, but can approach synchronous speed by slip
compensation, so as to improve the control precision